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The existing ball mill starting mode and the control mode is not saving, though frequency transformation can save a lot of electricity .start mode when the existing ball mill force of the impact is very large, so the ball mill bearings and gear reducer easily damaged, repair costs big.ball mill using existing Starting inrush current when starting a large ball (usually rated current 7 to 8 times), will cause voltage fluctuations, voltage drop, can also cause severe tripping and other equipment failures, affecting the normal production.Ball mills (ball grinding mills)are used primarily for grinding various ores and other materials. Ball mills can be either dry or wet designs according to the customers. Ball grinding mills are sized from 2 t/h to 30 t/h for wet grinding and from 0.5 t/h to 30 t/h for dry grinding. They have been designed in standard sizes of the final products between 0.074 mm and 0.4 mm in diameter. Ball mills are suitable for general mining applications such as ore dressing of ferrous metal and non-ferrous metal, quarry applications, glass ceramics, etc.Hongxing Machinery installs the axial flow fan in the upper air grinding, and we must plug for grinding machine screen, discharging chute, in order to avoid the short circuit. So that internal ventilation of grinding machine is smooth, it also completely solve the problem of grinding head. At the same time, locking wind system must also be done well, otherwise, the fan wind is directly pumped from discharging mouth to form the short circuit of ventilation.As part of the original design plan for the concentrator, the two Ball mills and the SAG mill have identical motors and transformers that are interchangeable in the event of a component failure. Because this failure involves just one transformer on Ball Mill #2, the concentrator was able to continue to operate with the SAG Mill and Ball Mill #1 at a reduced mill throughput. It was anticipated that production would be limited to approximately 1050 TPOH or about 25,000 TPD until repairs were completed.grinding plant: http://www.sell-mill.com/product/p8.html